#!/usr/bin/env python
"""
用户账户相关功能:注册，短信，登录，注销
"""
from django.shortcuts import render, redirect
from django.http import JsonResponse, HttpResponse
from django.views.decorators.csrf import csrf_exempt

from scripts.画图 import img
from web import models
from web.froms.account import RegisterModelForm, SendSmsForm, LoginSMSForm,  LoginForm

@csrf_exempt

def register(request):
    """注册"""
    if request.method == 'GET':
        form = RegisterModelForm()
        return render(request, '../../web/templates/register.html', {'form': form})

    form = RegisterModelForm(data=request.POST)

    if form.is_valid():
        form.save()
        # 验证通过，写入数据库(密码要是密文)
        return JsonResponse({'status': True, 'data': '/web/login/'})

    return JsonResponse({'status': False, 'error': form.errors})


def send_sms(request):
    """发送短信"""

    form = SendSmsForm(request, data=request.GET)
    # 只是校验手机号： 不能为空、格式是否正确
    if form.is_valid():
        return JsonResponse({'static': True})
    return JsonResponse({'static': False, 'error': form.errors})


def login_sms(request):
    """短信登录"""
    if request.method == 'GET':
        form = LoginSMSForm()
        return render(request, '../../web/templates/login_sms.html', {'form': form})

    form = LoginSMSForm(request.POST)
    if form.is_valid():
        # 用户输入正确，登录成功
        mobile_phone = form.cleaned_data['mobile_phone']
        # 用户信息放入session
        user_object = models.UserInfo.objects.filter(mobile_phone=mobile_phone).first()

        request.session['user_id'] = user_object.id
        request.session.set_expiry(60 * 60 * 24  * 14)

        return JsonResponse({"status": True, 'data': "/index/"})

    return JsonResponse({"status": False, 'error': form.errors})


def login(request):
    """用户名密码登录"""
    if request.method == "GET":
        form = LoginForm(request)
        return render(request, '../../web/templates/login.html', {'form': form})
    form = LoginForm(request, data=request.POST)
    if form.is_valid():
        username = form.cleaned_data['username']
        password = form.cleaned_data['password']

        # ser_object = models.UserInfo.objects.filter(username=username, password=password).first()
        # (手机=username and pwd=pwd) or (邮箱=username and pwd=pwd)
        from django.db.models import Q
        user_object = models.UserInfo.objects.filter(Q(email=username)|Q(mobile_phone=username)).filter(
            password=password).first()

        if user_object:
            # 用户名密码正确
            request.session['user_id'] = user_object.id
            request.session.set_expiry(60 * 60 * 24 * 14)

            return redirect('index')
        form.add_error('username', '用户名或密码错误')

    return render(request, '../../web/templates/login.html', {'form': form})


def image_code(request):
    """生成图片验证码"""
    from io import BytesIO
    from scripts.imagec_code import check_code

    image_object, code = check_code()

    request.session['image_code'] = code
    request.session.set_expiry(60) # 主动修改session的过期时间

    stream = BytesIO()
    image_object.save(stream, 'png')
    return HttpResponse(stream.getvalue())


def logout(request):
    request.session.flush()

    return redirect('index')